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不同积温带间，甜菜LAI最大值表现为：一积温带＞二积温带＞三积温带＞四积温带＞五积温带。相邻积温带间，表现出高积温带块根增长速度快于低积温带和低积温带糖分积累速度快于高积温带的规律性。相邻积温带间甜菜产量差异未达显著标准，相间积温带间产量差异均达到1％显著水准。相邻积温带间含糖率差异均达到1％显著水准。由南向北，≥10℃积温每减少100℃，含糖率增加0．32°S。
The maximum value of LAI of sugar beet was as follows: a plot of temperate zone> a plot of temperate zone> a plot of temperate zone> plot plot of temperate zone> five plot temperate zones. The results showed that the root growth rate of high accumulated temperature zone was faster than that of high accumulated temperature zone in the lower and lower accumulated temperature zones. The yield difference of beet between the adjacent accumulated temperature zone did not reach the significant standard, and the difference of output between the accumulated temperature zone in the phase reached the significant level of 1%. The differences in sugar content between adjacent accumulated temperature zones reached a significant level of 1%. From south to north, ≥10 ℃ accumulated temperature decreases by 100 ℃, the sugar content increased by 0.32 ° S.